Finding the Third Proportional to 5,218,486 and 10,583,764

Step by Step Solution

1. Step 1: Write the proportion equation
   5,218,486 : 10,583,764 = 10,583,764 : x
2. Step 2: Convert to fraction form
   5,218,486/10,583,764 = 10,583,764/x
3. Step 3: Cross multiply
   5,218,486x = 10,583,764 × 10,583,764
4. Step 4: Simplify right side
   5,218,486x = 112,016,060,407,696
5. Step 5: Solve for x
   x = 112,016,060,407,696/5,218,486
6. Step 6: Final answer
   x = 21,465,241.15